Wrench



UNITED STATES PATENT. OFFICEQ FRED S. HAZELTON AND CHARLES LEACH, OF NORTON, KANSAS.

SPECIFICATION forming part of Letters Patent No. 377,755. dated February 14,1888.

i Application tiled October 17, 1887. Serial No. 252,612. (No model.)

To @ZZ whomfitmay concern/.-

Be it known that we, FRED S. HAZELTON and CHARLES LEAOH, citizens of the United States, residing at Norton, in the county of Norton and State of Kansas, have invented a new and useful Improvement in Wrenches, of which the following is a specification.

Our invention relates to an improvement in wrenches; and it consists in a certain novel construction and arrangement of devices fully set forth hereinafter, and specifically pointed out in the claim. 4

In the accompanying drawings, Figure l is a side view of the wrench. Fig. 2 is a similar view, partly in section.

Referring by letter to the drawings, A designates the main shank of the wrench,.fasl1ioned at one end to form a handle, B, and at the other end to form the jaw C, which is serrated on the inner side. l

D D represent two parallel lugs or apertured ears, formed on the sides of the jaw C and extending beyond the inner side of the same, and E'dcsignates the movable jaw, which is pivoted between the free ends of the said apertured ears. The inner side of this jaw is also serrated, as shown clearly in the drawings.y

to form the curved or segmental arm G,- which is threaded its entire length. The outer side of the main shank, at the rear end ofthe jaw C, is provided with a projection or hammerhead, H. The shank C is further providedv with two slots, I and K, intersecting each other at right angles, and the threaded arm Gis adapted to operate inthe slot I when the rear end of the movable shank is operated.

L designates athumb-nut which operates in the slot K and screws on the threaded arm G. It will be readily seen that if the said thumbnut isturned the rear end of the shank F will be operated. It may thus be moved either toward or from the main shank, and as the jaw E is on the outer end of the shank F the former may be operated to grip a pipe or nut at will. It will beseen that the opposite sides of the nut L project beyond the sides of the shank A, and therefore it may be turned very easily by the thumb and finger, and it cannot become detach d from the wrench as long as it is engaged with the threaded shank G.

The inner sides of the shanks A and F, between the pivot and the threaded arm, are provided with angular notches a and f, re-

spectively,which notches are in line with eachl other and adapted to engage opposite sides of and the movable shank carrying'the jaw E and the threaded arm G. The hammer-head is formed integral with the main shank, preferably opposite the point where the jaws are pivoted together. 4'Ihe thumb-nut being held in the slot K and engaging the threaded arm, we can fix and hold the jaws at the desired distance apart without the use of a device to hold the shanks apart--such as a spring between said shanks. This is a great advantage in construction, as when the jaws have been set to bind on a -nut situated where there is not sufcient light and have to be removed temporarily from the nut for any cause, they can be immediately replaced thereon without loss'of v time and patience. Moreover, the nut, resting in the slot and protected on each side by the shank, is not so liable to be accidentally turned as if not so protected.

Having thus described our invention, w claimf d The herein-described wrench, composed of but four parts, the shank A, having the integral hammer-head H, the integral perforated ears D, and the integral jaw C, trans-- v versely serrated on its inner or meeting edge,

and provided with the rectangular notch a, and the slots K and L, intersecting each other at right angles, the shank F, having the integral segmental threaded arm G and integral jaw E, transversely serrated on its meeting edge to correspond and coact with the jaw C,

I CC

and provided with the rectangular notch f, our own we have hereto a'ixed our signatures opposing the notch a, the pivotal pin connectin presence of two Witnesses. ing the shank F to the erforated ears D, and the thu nib-nut K, engaging the threaded arm 'HION' 5 G in the slot K, in which slot the said nut is held While engaging said arm, substantially as Witnesses: specified. GEORGE B. STEAR,

In testimony that we claim the foregoing as '1). H. HARRIS. 

